Critically endangered eels are among the species which may have been affected by the dry weather so far this year, the Environment Agency has said.

In its weekly drought briefing, the agency said that low numbers of elvers, or young eels, were recorded migrating from the sea to freshwater in Pevensey Levels, East Sussex.

It is thought to be an early indication of the long-term impacts of the unusually dry spring, which has left some rivers and canals with very low water levels.